class_docstr: Base class of Detectors that need training.
class_docstr_tok: ["Base","class","of","Detectors","that","need","training","."]
code: def _fit_core(self, input: Any) -> Any:
      pass
  
file_path: darts/darts/ad/detectors/detectors.py
imports: from abc import ABC, abstractmethod
  from typing import Any, Sequence, Union
  from darts import TimeSeries
  from darts.ad.utils import eval_accuracy_from_binary_prediction
  from darts.logging import raise_if_not
label_desc: Use image node_id 3 for calling the FittableDetector obj's underlying member method code with example usage: obj._fit_core(input) without return types